any of various small passerine birds (family Sittidae) with a sharp beak and a short tail, usually searching for insects by moving down tree trunks
See nuthatch in American Heritage Dictionary 4
(nŭtˈhăchˌ)
noun
Any of several small, short-tailed birds of the family Sittidae, having a long sharp bill and known for climbing down trees headfirst. Also called nutcracker.